Spinning machine



May 6, 1930. H. GARTH ET AL 1,757,796

SPINNING MACHINE Filed Sept. 21, 1928 a. 7 13 v A'H Patented May 6, 1930 UNITED STA-TESS PA EN T om n HOLLAN GARTH, or ANDOVER, JOSEPH, LonenoTToM ANDT ANK Bonus} on Law- RENCE AND WILLIAM CHARLES JUST, or METHUEN, MASSACHUSETTS, ASSIGNORS T AMERICAN WOOLEN C01VIPANY, OF B OF MASSACHUSETTS OS TONQ MASSACHUSETTS, A CORPORATION srmmne MACHINE j I Applicationfiled September 21, 1928. seri ainb. 307,388.

This invention relates to spinning or roving machines and moreparticularly to a device I 'which may be embodied in aspinning ma-: chine for preventing double spinning.

In spinning operations, a threadis drawn from each of a plurality of spaced spools and guided separately to one of a plurality of rapidly rotating spindles upon which it is, wound while being spun. It often happens that one of the threads becomes broken and" entangled with another thread. If this is permitted to take place two threadsare spun together andwound upon the same spindle resulting in what is commonly known as 1'5 double spinning. Double spinning isobjec tionable chiefly for thereason that when the thread is employed in'the -,manufacture of cloth there are lines in the cloth which contain threads of a non-uniform si zewhich is a defect either causing rejection of the cloth or materially lessening itsvalue. I

It is an object of the present invention to overcome these difliculties and provide a device of simple construction which maybe embodied in the ordinary spinning or roving machine to prevent double spinningor roving and which is particularly adapted for use ina cap spinning machine. In accordance with the invention a' device is arranged between '36 adjacent threads being spun so that if one thread becomes broken and entangled with another it will be caught and held until the action of spinning a thread twists it off and r thus disconnects the two threads. A- suitable '33 device for this purpose may comprise an arm adapted to reciprocate between adjacent threads and which is provided at its end with V a plate containing a wedge shaped notch i adapted to catch and hold a thread which 10'" becomes entangled with another. In accordance with the preferred construction the plate is curved upon its forward edgeso as to guide the thread to the rear edge of the plate which is provided with one or more thread-holding I5 notches.

The invention is illustrated as applied to'a cap spinning machine in which the threads are spun continuously upon rotating spindles l and in which the device for preventing double spinning reciprocates continuously between adjacent threads. It will be understood, how-f ever, that the invention is applicable to other types of spinning and roving machines, such as the ring. and flyer types, and is not limited to the specific type described.

T The invention will be more clearly under- 7 stood from the following'description in con;

junction with the accompanying drawings in which,

Fig. 1 isa side'elev'ational View, partly broken away, of a cap spinning machine embodying the invention; I

Fig. 2 is a' plan View of same;

Fig. 3is a detail view of the device adapted a 'portionjof the to engage and hold the threadwhen it be comes entangled with another; and

Fig. 4 is a fragmentary perspective view of the spinning machine showingthe device holding a thread 1 entangled with another while being twisted. i

'In the accompanying drawings acaplspinning machine is "illustrated comprising a frame 10 upon whichare mounted a plurality of upwardly extendingspindlesi or pegs 11 each adapted to receive'for rotation' 'thereon a1 spool12 containing a supplyof rovin Tffto be spun. A cross shaft 15 is mounted or To-" tation: in suitable bearings in the frame, 10. and is provided with a plurality of spaced rolls 16. The frame loisprovided zit-spaced points with alined upwardly extending guide armsl? adapted to support for rotation a shaft 18 provided with'a. plurality of spaced rolls 19 which engage and cooperate withthe rolls. 16 to draft the thread from-the spools 12. A second series of spaced stationary spindles' 20 each provided with a hollow cap 21 are mounted-upon the frame 10. Each spindle 20 is arranged to receive a tube 25 which may be operatively connected for rapidrotation, as for example, to a pulley 22 mountedzupon each tube 25 for rotation by a belt 23. If desired a guide 26 may be positioned upon the frame 10 to receive and guide the rovings from each of the spools 12 in a'suitable direction to be received betweenithe proper draw rolls 16 and 19. The shaft 15. m'ay berotated I -In accordance with one application of the invention an eccentric 30 may be mounted upon the shaft to rotate therewith. An eccentric strap 31 is arranged to engage the I eccentric and is connected at its free end to one end of a link 32 the other end ofwhich is fixed upon a shaft 38 which is mountedfor rotation in suitable hearings in the frame 10. A plurality-of links '35- are secured in any suitable manner. in spaced relation upon the shaft-.33 and .each is provided at. its free endwith swivel connection 34 adapted to receive an arm 36 arranged to reciprocate' ursubstantially a given plane between adjacent threads. IVith this in view each-arm -36 is supported for reciprocatory movement in an opening 8 ina cross member-'9 of the frame. A suitable clamping deviceis provided upon the free end of each arm 36 and is adapted to engage and hold a thread which becomes broken and entangled with anotherthread.

. For this purpose each of the arms 36'is provided with aplate 3v7 provided with: one or more wedge shaped notches 38 arranged so that a thread may be wedged therein and held, Preferably, the plate 37. is provided with a curved forwardedge 39 so as to engage and guide a thread toward the rear edge ofthe plate;

In the operation of the machine, the shafts 15 and 18 are, caused to rotate continuously by suitablemechanism not shown and power is transmitted through belts 23 to rotate the tubesf25. In the normal operation of the machine a roving is drawn from each of the spools 12 through a separate pair ,of-cooperating rolls 16 and 19 and istwisted and wound upon one of the tubes 25.-If for any reason one ofthethreads becomes broken and entangled with anotherthread, as shown in Fig. 4, double spinning will resultunless" that threadiisbroken. In the, operation-of the device of the invention the thread which thus becomes broken and entangled with another is engaged by the curved iorward edge 39.

ofthe p1ate'37 which guides, it to the rear edge thereof whereupon it. is caused to spring into one ofthe notches 38 in which it becomes wedged and held. As the spinning of the thread continues it is twisted off and thus broken thereby separating :the two entangled threads and preventing double spinning.

The-device of the invention is of simple constructionand. while, .it is particularly adapted for aica'p splnning machine it can be used upon anytype of spinning or roving n1 ael1 ine.,Its action is positive and depend able 'becauseit merely'holds thethread While theaet-ionofithe. machine twisting the thread causes the latter to break whereasprior devices ofathis characterlhave relied upon a knife-like instrument fon'euttinmthe thread. These prior deviceshave-not been wholly I satisfactory becauseithey oiten'failed to cut the thread. Throughout the appended claims the term spinning is intended to cover roving as well as spinning.

That we claim is: Y Y

1. In a spinning machine having spaced cooperatingpairs of draw rolls, each pair cooperating with similarly spaced spindles to supply a thread to each of said spindles, and means for rotating said spindles continuously to twist said threads separately, the

combination therewith of a plate, positioned between said threadseand provided'on its inner edge with a. notch; and'nieans.iorreciprocating. said plate in a path substantially perpendicular to the plane of said threads to move the crotch of'said notch inwardly towards said planea limited amount to wedge lyto twist said threads separately, the combination therewith of an arm, a plate su ported between said threads by one end of t e arm and having a notch on .1ts lnner edge, means for guiding said arm for movement in a path substantially perpe di h a 7 plane of said threads, and means connecting the other end of the arm for reciprocating the same to move the crotch of said notcli'inwardly towards said planeto wedge therein a portion of one thread and hold it against rotation whereby said thread becomes'broken solely by its own twisting'action. V

In testimony whereof we aflix our signatures.

' I-IOLLAN GARTH. a

. JOSEPH LONGBOTTOM. FRANK BURNS.

WILLIAM CHARLES JUsT."

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